CentOS6 4 配置LVS（DR模式）

dr模式中lvs主機與實際伺服器都有一塊網絡卡連在同一物理網段上。

ip分配

vip:10.10.3.170

rip1:10.10.3.140

rip2:10.10.3.141

1、安裝所需的依賴包

yum install -y wget make kernel-devel gcc gcc-c++ libnl* libpopt* popt-static

2、建立乙個軟鏈結，防止後面編譯安裝ipvsadm時找不到系統核心

ln -s /usr/src/kernels/2.6

.32-358.18
.1.el6.x86_64/ /usr/src/linux

wget 

.org/software/kernel-2.6/ipvsadm-1.26
.tar
.gztar zxvf ipvsadm-1.26
.tar
.gzcd ipvsadm-1.26
make && make install

vi lvs.sh

#!/bin/bash

# 2013-09-07 by kgdxpr
vip=10.10.3.170
rip1=10.10.3.140
rip2=10.10.3.141
/etc/rc.d/init.d/functions
logger $0 called with $1
case
"$1"
instart)
echo
" start lvs of directorserver"
/sbin/ifconfig eth0:0
$vip broadcast $vip netmask 255.255.255.255 up
/sbin/route add -host $vip dev eth0:0
echo
"1" >/proc/sys/net/ipv4/ip_forward
#clear ipvs table
/sbin/ipvsadm -c
#set lvs
/sbin/ipvsadm -a -t $vip:80
-s rr
/sbin/ipvsadm -a -t $vip:80 -r $rip1:80 -g
/sbin/ipvsadm -a -t $vip:80 -r $rip2:80 -g
#run lvs
/sbin/ipvsadm
;;stop)
echo
"close lvs directorserver"
echo
"0" >/proc/sys/net/ipv4/ip_forward
/sbin/ipvsadm -c
/sbin/ifconfig eth0:0 down
;;*)
echo
"usage: $0 "
exit
1esac

/sbin/ipvsadm -a -t vi

p:80−

r rip1:80 -g (-g代表dr模式，還有其他模式)

5、給指令碼加許可權，並執行

chmod +x lvs.sh

chmod 755 /etc/rc.d/init.d/functions
./lvs.sh start

vi realserver.sh

#!/bin/bash

# 2013-09-07 by kgdxpr
vip=10.10.3.170
/etc/rc.d/init.d/functions
case
"$1"
instart)
echo
" start lvs of realserver"
/sbin/ifconfig lo:0
$vip broadcast $vip netmask 255.255.255.255 up
/sbin/route add -host $vip dev lo:0
echo
"1" >/proc/sys/net/ipv4/conf/lo/arp_ignore
echo
"2" >/proc/sys/net/ipv4/conf/lo/arp_announce
echo
"1" >/proc/sys/net/ipv4/conf/all/arp_ignore
echo
"2" >/proc/sys/net/ipv4/conf/all/arp_announce
sysctl -p >/dev/null 2>&1
;;stop)
/sbin/ifconfig lo:0 down
echo
"close lvs directorserver"
echo
"0" >/proc/sys/net/ipv4/conf/lo/arp_ignore
echo
"0" >/proc/sys/net/ipv4/conf/lo/arp_announce
echo
"0" >/proc/sys/net/ipv4/conf/all/arp_ignore
echo
"0" >/proc/sys/net/ipv4/conf/all/arp_announce
;;*)
echo
"usage: $0 "
exit
1esac

chmod +x realserver.sh

chmod 755 /etc/rc.d/init.d/functions
./realserver.sh start

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